Alveolar ventilation refers to the amount of air that reaches the alveoli in the lungs for gas exchange.This determines the amount of oxygen that is available for the body to use, and the amount of carbon dioxide that is eliminated from the body. Background: Pulmonary dead space (VD) is an index of ventilation inhomogeneity and one of. Ventilation refers to the process of moving air in and out of the lungs. The total dead space (VD) represents the volume of ventilated air that does not. Some apparatus dead space may actually reduce total dead space, as an ETT bypasses the majority of anatomical dead space of the patient (nasopharynx).ĭead space from the patient. Determinants of pulmonary dead space in ventilated newborn infants. Equation VD Dead space Ventilation (L/min) VE Minute Ventilation (L/min) PaCO2 arterial CO2 Tension (mmHg) PECO2 Expired CO2 Tension (mmHg) VD is the total volume that ventilates the airways, non-perfused lung units and the ventilation tubing. mechanics above can be further divided into dead space and alveolar VT. Types of Dead Spaceĭead space from equipment, such as tubes ventilator circuitry. Glomerular Filtration and Tubular Functionĭead space is the proportion of minute ventilation which does not participate in gas exchange. Functional Anatomy and Control of Blood Flow
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